X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=docs%2Freport%2Fvpp_functional_tests%2Foverview.rst;fp=docs%2Freport%2Fvpp_functional_tests%2Foverview.rst;h=0000000000000000000000000000000000000000;hb=9063ade3cc3652a320b8f81a6b5211fcc7ab087d;hp=510f204bdf6b169b6068c00b1a84e144ee5dbc02;hpb=32c7c25c5bfa7577543129dec02e790a88b60a2b;p=csit.git

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-Overview
-========
-
-Virtual Topologies
-------------------
-
-CSIT VPP functional tests are executed in VM-based virtual topologies
-created on demand using :abbr:`VIRL (Virtual Internet Routing Lab)`
-simulation platform contributed by Cisco. VIRL runs on physical
-baremetal servers hosted by LF FD.io project. Based on the packet path
-thru SUT VMs, two distinct logical topology types are used for VPP DUT
-data plane testing:
-
-#. vNIC-to-vNIC switching topologies.
-#. Nested-VM service switching topologies.
-
-vNIC-to-vNIC Switching
-~~~~~~~~~~~~~~~~~~~~~~
-
-The simplest virtual topology for software data plane application like
-VPP is vNIC-to-vNIC switching. Tested virtual topologies for 2-Node and
-3-Node testbeds are shown in figures below.
-
-.. only:: latex
-
-    .. raw:: latex
-
-        \begin{figure}[H]
-            \centering
-                \graphicspath{{../_tmp/src/vpp_functional_tests/}}
-                \includegraphics[width=0.90\textwidth]{virtual-2n-nic2nic}
-                \label{fig:virtual-2n-nic2nic}
-        \end{figure}
-
-.. only:: html
-
-    .. figure:: ../vpp_functional_tests/virtual-2n-nic2nic.svg
-        :alt: virtual-2n-nic2nic
-        :align: center
-
-
-.. only:: latex
-
-    .. raw:: latex
-
-        \begin{figure}[H]
-            \centering
-                \graphicspath{{../_tmp/src/vpp_functional_tests/}}
-                \includegraphics[width=0.90\textwidth]{virtual-3n-nic2nic}
-                \label{fig:virtual-3n-nic2nic}
-        \end{figure}
-
-.. only:: html
-
-    .. figure:: ../vpp_functional_tests/virtual-3n-nic2nic.svg
-        :alt: virtual-3n-nic2nic
-        :align: center
-
-SUT1 and SUT2 are two VMs (running Ubuntu or Centos, depending on the test
-suite), TG is a Traffic Generator (running Ubuntu VM). SUTs run VPP
-SW application in Linux user-mode as a Device Under Test (DUT) within
-the VM. TG runs Scapy SW application as a packet Traffic Generator.
-Network connectivity between SUTs and to TG is provided using virtual
-NICs and VMs' virtio drivers.
-
-Virtual testbeds are created on-demand whenever a verification job is
-started (e.g. triggered by the gerrit patch submission) and destroyed
-upon completion of all functional tests. Each node is a Virtual Machine
-and each connection that is drawn on the diagram is available for use in
-any test case. During the test execution, all nodes are reachable thru
-the Management network connected to every node via dedicated virtual
-NICs and virtual links (not shown above for clarity).
-
-Nested-VM Service Switching
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Nested-VM (Virtual Machine) service switching topology test cases
-require VPP DUT to communicate with nested-VM(s) over vhost-user virtual
-interfaces. Nested-VM(s) is(are) created on SUT1 and/or SUT2 for the
-duration of these particular test cases only. Virtual test topology with
-nested-VM(s) is shown in the figure below.
-
-.. only:: latex
-
-    .. raw:: latex
-
-        \begin{figure}[H]
-            \centering
-                \graphicspath{{../_tmp/src/vpp_functional_tests/}}
-                \includegraphics[width=0.90\textwidth]{virtual-3n-vm-vhost}
-                \label{fig:virtual-3n-vm-vhost}
-        \end{figure}
-
-.. only:: html
-
-    .. figure:: ../vpp_functional_tests/virtual-3n-vm-vhost.svg
-        :alt: virtual-3n-vm-vhost
-        :align: center
-
-Functional Tests Coverage
--------------------------
-
-|csit-release| includes following VPP functionality tested in virtual VM
-environment:
-
-+-----------------------+----------------------------------------------+
-| Functionality         |  Description                                 |
-+=======================+==============================================+
-| LISP                  | Locator/ID Separation Protocol overlay       |
-|                       | tunnels and locator/id mapping control.      |
-+-----------------------+----------------------------------------------+
-
-Functional Tests Naming
------------------------
-
-|csit-release| follows a common structured naming convention for all
-performance and system functional tests, introduced in CSIT-17.01.
-
-The naming should be intuitive for majority of the tests. Complete
-description of CSIT test naming convention is provided on
-:ref:`csit_test_naming`.